View clinical trials related to Down Syndrome.
Filter by:This study is a non-drug, multicenter, prospective cohort study. It will be conducted in 300 volunteers from 12 to 45 years of age (inclusive) with a diagnosis of Down syndrome from 3 countries (France, Spain, United Kingdom (UK)). The basic hypotheses of the study are the following: 1. Diseases (and comorbidity) arise from one or more biological networks perturbed by the genetic disorder (trisomy 21) through interaction with environmental risks factors and epigenetic changes. 2. Health comorbidity patterns in DS individuals (particularly of obesity and related conditions) will likely vary by age and sex. 3. Obesity comorbidity patterns will relate to variation in factors including lifestyle, stress-response, severity of intellectual disability (ID) and variation in cognitive domains such as executive functioning. 4. Stress responses, as measured with cortisol concentrations, will differentiate individuals with DS who are obese and those who are not. Extremes in phenotype (Obese vs. Non-obese) will be related to differences in the metabolomic, transcriptomic, and microbiome concentrations.
Progressive age-related cognitive deficits occurring in both AD and DS have been connected to the degeneration of several neuronal populations, but mechanisms are not fully elucidated. The most consistent neuronal losses throughout the progression of AD are seen in cholinergic neurons where these losses negatively affect cognition, particularly in attention, learning, and memory formation. Evidence of reduced cholinergic integrity in DS is largely limited to animal models and post-mortem human data. The investigators propose to use molecular, functional, and structural biomarkers to assess the cholinergic integrity in adults with DS. The investigators anticipate using the data gathered in this pilot study to inform future study designs to determine AD risk stratification in DS by identifying individuals who show an accelerated decline in cholinergic integrity that correlates with cognitive and neurobehavioral changes. Also, our cholinergic biomarkers may identify whether individuals with DS are likely to respond to pro-cholinergic interventions, including the novel cholinergic modulators that are being developed to enhance cholinergic-sensitive cognitive functioning. The investigators anticipate using the data gathered here to inform future treatment studies in TRC-DS and beyond where novel cholinergic treatments may offer opportunities for early intervention in DS and be complementary to disease-modifying approaches such as anti-amyloid treatments.
Down Syndrome (DS) is characterized by an additional copy of chromosome 21, which also increases risk of Alzheimer's Disease (AD). The investigators' lab found a non-invasive way to remove toxic proteins from the brain in AD mouse models. Remarkably, treated mice also have improved memory on behavioral testing. The investigators then translated this non-invasive method, which uses light and sound to stimulate the brain, to be used in mild Alzheimer's patients and cognitively normal adults. The investigators have also translated this research into a vibrating speaker device to study tactile vibration to stimulate the brain as well. For the present study, 30 participants with Down Syndrome and 30 cognitively normal adult controls will be recruited, and the investigators will assess their brain waves with electroencephalogram (EEG) during light, sound, and tactile stimulation. The investigators will also test for safety, feasibility, and cognitive performance before and after a 30-60 minute session of light and sound stimulation to optimize the stimulation devices for use in the DS population.
The aim of this study is to examine the activity participation levels of Down syndrome(DS) children and the restrictive or supportive factors affecting their participation levels and to investigate their effects on quality of life. 35 children diagnosed with DS by a pediatric neurologist and 35 typically developing children are planned to be included in this study. Sociodemographic data of typically developing and DS children who agreed to participate in the study and their families will be questioned. Activity (Gross Motor Function Measurement-GMFM-88) , participation and the effect of the environment on participation (Participation and Environment Measure for Children and Youth-PEM-CY ), reflection of motor development levels to functions in daily living activities (Pediatric Evaluation of Disability Inventory- PEDI) , quality of life(Pediatric Quality of Life Inventory- PedsQL) and familial impact (Impact on Family Scale-IPFAM) will be evaluated. Evaluation methods to be used in our study will be applied one-on-one with children and face-to-face interviews with their parents. Our study is important in that there is little evidence on participation studies in children and that changing medical paradigms emphasize the quality of life of children. In addition, the PEM-CY the investigators will use in the study will make the study more valuable as it examines the effect of the environment on participation and evaluates participation in different environments.
This phase I trial tests the safety, side effects, and best dose of uproleselan in combination with fludarabine and cytarabine in treating patients with acute myeloid leukemia, myelodysplastic syndrome or mixed phenotype acute leukemia that has come back (relapsed) or does not respond to treatment (refractory) and that expresses E-selectin ligand on the cell membrane. Uproleselan binds to E-selectin expressed on endothelial cells of the bone marrow and prevents their interaction with selectin-E ligand-expressing cancer cells. This may prevent leukemia cells from being sequestered in the bone marrow niche and escaping the effect of chemotherapy. Chemotherapy drugs, such as fludarabine and cytarabine, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving uproleselan in combination with fludarabine and cytarabine may enhance their activity.
The risk of severe course of SARS-CoV-2 infection in people with Down Syndrome is substantially increased. The risk of death is 3-10 fold higher than in healthy people. SARS-CoV-2 vaccines have been registered for adults and adolescents but none of them have been studied in people with Down Syndrome. Vaccine responses in people with Down Syndrome are known to be suboptimal. Therefor the objective of this study is to assess the immunogenicity of SARS-CoV-2 vaccination in people with Down syndrome. To do so, the antibody response, cellulair and mucosal immuneresponse in people with Down syndrome after the SARS-CoV-2 vaccination will be evaluated and compared to healthy controls.
Infants with Down syndrome show significant delays and weaknesses in motor, cognitive, and language development compared to typically developing infants. This project aims to examine the developmental cascade effects of specific gross and fine motor experience on motor, cognitive and language development in infants with Down syndrome. We propose that both gross and fine motor experience will facilitate cognitive and language development in infants with Down syndrome, and particularly, fine motor experience will help advance gesture and early words production.
Individuals with Down syndrome (DS) live with visual deficits due, in part, to elevated levels of higher-order optical aberrations (HOA). HOAs are distortions/abnormalities in the structure of the refractive components of the eye (i.e. the cornea and the lens) that, if present, can result in poor quality focus on the retina, thus negatively impacting vision. HOAs in the general population are overall low, and thus not ordinarily considered during the eye examination and determination of refractive correction. However, for some populations, such as individuals with DS, HOAs are elevated, and thus the commonly used clinical techniques to determine refractive corrections may fall short. The most common clinical technique for refractive correction determination is subjective refraction whereby a clinician asks the patient to compare different lens options and select the lens that provides the best visual outcome. Given the cognitive demands of the standard subjective refraction technique, clinicians rely on objective clinical techniques to prescribe optical corrections for individuals with DS. This is problematic, because it may result in errors for eyes with elevated HOA given that these techniques do not include measurement of the HOAs. The proposed research evaluates the use of objective wavefront measurements that quantify the HOAs of the eye as a basis for refractive correction determination for patients with DS. The specific aim is to determine whether dilation of the eyes is needed prior to objective wavefront measurements. Dilation of the eyes increases the ability to measure the optical quality of the eye and paralyzes accommodation (the natural focusing mechanism of the eye), which could be beneficial in determining refractions. However, the use of dilation lengthens the process for determining prescriptions and may be less desirable for patients.
Work capacity is an important predictor of declining health or physical function, and of mortality, and is commonly measured as peak oxygen consumption. Peak oxygen consumption is very low in individuals with Down syndrome, the most prevalent genetic cause of intellectual disability. Previous research suggests individuals with Down syndrome may experience a double disadvantage when they are exercising: they may not be able to increase cardiac output sufficiently and they may not be able to allocate adequate blood flow to the working muscles. The aim of this research proposal is therefore to investigate the responses in central and peripheral blood flow regulation and cardiac autonomic function to exercise training in individuals with DS. Additionally the effects of exercise on gait, balance and attitude towards exercise in individuals with DS are investigated.
According to data from French congenital malformation registries, the prevalence of Down Syndrome (DS) in 2017 (live births and medical termination of pregnancy (MToP)) in Reunion Island was the lowest in France (23.04 per 10,000 births), notably in relation to a young maternal age. However, if we look at live births, Reunion Island has the highest prevalence of DS in France (12.24 vs. 5.81 per 10,000 births), despite a well organized prenatal diagnosis (PND). In fact, the use of MToP in this context is the lowest in France (10.8 vs 26.3 per 10 000 births). Local specificities may have an impact on the choice of patients to undergo or not undergo a MToP in the context of PND of DS and explain why the rate of recourse to MToP is the lowest in France. To date, no qualitative study exploring the reasons why women and their partners do not undergo a MToP in the context of DS has been conducted in Reunion Island. Thus, the main hypothesis is that the low recourse to MToP following PND of DS in Reunion Island could be explained by the beliefs, values or choices of Reunion Island women and their partners during pregnancy in relation to a specific family, socio-cultural and economic context.